I finally got the nerve (and time) to get to the controller and sure enough, I found a 'smoked' trace on the circuit board. I see that people have had limited success re-soldering the connection. I tried but I am not confident in the results as it looked like the relay pin was gone. Have you (or anyone) had any success replacing the realy?? It is a $1 part (+$7 shipping) but worth a try I think at least. Unless persuaded otherwise